local-grid: Remove support for old linux kernels.

morph/lib/vagrant-guest.nix

@@ -22,11 +22,6 @@ in
   # Enable the OpenSSH daemon.
   services.openssh.enable = true;
 
-  # Wireguard kernel module for Kernels < 5.6
-  boot = lib.mkIf (lib.versionOlder pkgs.linuxPackages.kernel.version "5.6") {
-    extraModulePackages = [ config.boot.kernelPackages.wireguard ] ;
-  };
-
   # Enable DBus
   services.dbus.enable    = true;